Stored Cross-Site Scripting Vulnerability in Esri ArcGIS Server
CVE-2026-50095

6.1MEDIUM

Key Information:

Vendor

Esri

Status
Arcgis Server
Vendor
CVE Published:
26 October 2026

What is CVE-2026-50095?

A stored cross-site scripting (XSS) vulnerability has been identified in Esri's ArcGIS Server versions 11.1 and earlier, affecting both Windows and Linux systems. The flaw enables a remote, unauthenticated attacker to inject malicious scripts that can be executed within the context of a victim's browser. This could lead to significant security risks, including unauthorized access to user data and compromised sessions. Esri has released a patch for versions 12.1, 12.0, 11.5, 11.3, and 11.1. Users are strongly advised to upgrade their systems to patched versions to mitigate the risks associated with this vulnerability, especially for those running unlisted legacy versions.

Affected Version(s)

ArcGIS Server 11.1 < 12.1

References

https://www.esri.com/arcgis-blog/products/trust-arcgis/ad...

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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